The only sort of power that ultimately matters is of course physical power, defined as energy per unit time. I’m not used to thinking about power and lack any concept of what a watt or kilowatt is. To remedy this, I made the table below. A more comprehensive but also more complex table is here.
| Watt (W), 1V × 1A | 1 | J/s |
| Horsepower (hp), metric | 735.5 | W |
| AAA battery | 1 | W |
| LED bulb | 5-10 | W |
| Basal metabolic rate (2,000 cal/day) | 100 | W |
| Solar panel (1.6m2) | 300 | W |
| Average household consumption | 1 | kW |
| Tesla highway driving | 10-15 | kW |
| Wind turbine | 1-3 | MW |
| Nuclear power station | 1 | GW |
| World electricity production (2020) | 3,000 | GW |